### Sig Fig Decimal

Posted:

**Tue Oct 01, 2019 1:03 pm**If you have adding numbers and get 113.9 and the answer can only have 3 sig figs in it, would the answer be 114 or 114.? Or are they the same thing?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=9&t=45801

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Posted: **Tue Oct 01, 2019 1:03 pm**

If you have adding numbers and get 113.9 and the answer can only have 3 sig figs in it, would the answer be 114 or 114.? Or are they the same thing?

Posted: **Tue Oct 01, 2019 1:11 pm**

They would be the same thing! Only if the number in the ones place was a zero would you need a decimal to include it in your sig figs.

ex.

114 - 3 sig figs

110 - 2 sig figs

110. - 3 sig figs

ex.

114 - 3 sig figs

110 - 2 sig figs

110. - 3 sig figs

Posted: **Tue Oct 01, 2019 1:45 pm**

114=114.

They both mean the same thing and they both have 3 sig figs

They both mean the same thing and they both have 3 sig figs

Posted: **Tue Oct 01, 2019 1:51 pm**

They both have three sig figs but I think 114 would be the better answer just because the extra decimal after 114 seems unnecessary.

Posted: **Wed Oct 02, 2019 3:13 pm**

Does that mean 114.0 would be 4 sig figs?

Posted: **Wed Oct 02, 2019 3:16 pm**

114 and 114. have the same number of sig figs.

114 and 114.0 do not have the same number of sig figs.

114 has 3 significant figures.

114.0 has 4 significant figures.

114 and 114.0 do not have the same number of sig figs.

114 has 3 significant figures.

114.0 has 4 significant figures.

Posted: **Wed Oct 02, 2019 5:28 pm**

As long as you don't add a 0 after . in 114. the answer remains in three significant figures, so either should work!

Posted: **Wed Oct 02, 2019 5:31 pm**

114 and 114. have the same number of sig figs but adding the "." does seem a little redundant so I'd say stick with 114. But 114.0 is not the same as 114 because it has 4 sig figs.

Posted: **Tue Oct 08, 2019 6:04 pm**

114 and 114. have the same amount of significant figures so you could use either.

Posted: **Tue Oct 08, 2019 6:42 pm**

They are the same thing. But if you add a 0 after ".", then it would be different

Posted: **Tue Oct 08, 2019 8:34 pm**

They are the same amount of sig figs! Since they are the same amount of numbers 114 and 114. they are equal in sig figs.